Question

Alguém me ajuda nisso? b= (bij) 2x3 tal que aij = 1 se i = j : i + j se i ≠ j

Answer 1

$B=\left[\begin{array}{ccc}b_{11}&b_{12}&b_{13}\\b_{21}&b_{22}&b_{23}\end{array}\right]$

$B=\left[\begin{array}{ccc}1&3&4\\3&1&5\end{array}\right]$